PRECISION GEOCHEMICAL (ICP-MS, LA-ICP-MS) ANALYSIS OF ROCK AND MINERAL COMPOSITION: THE METHOD AND ACCURACY ESTIMATION IN THE CASE STUDY OF EARLY PRECAMBRIAN MAFIC COMPLEXES

The application of inductively coupled plasma mass spectrometry (ICP-MS) is discussed in the case study of Precambrian mafic and ultramafic rocks of eastern Fennoscandian shield and their mineral components. Determination of bulk probe sample composition is reported to be possible using both the che...

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Bibliographic Details
Published in:Proceedings of the Karelian Research Centre of the Russian Academy of Sciences
Main Authors: Сергей Анатольевич Светов, Александра Владимировна Степанова, Светлана Юрьевна Чаженгина, Евгения Николаевна Светова, Зоя Павловна Рыбникова, Анжела Ивановна Михайлова, Арсений Сергеевич Парамонов, Марина Валерьяновна Эхова, Владимир Александрович Колодей, Sergey Svetov, Alexandra Stepanova, Svetlana Chazhengina, Evgeniya Svetova, Zoya Rybnikova, Anzhela Mikhaylova, Arseniy Paramonov, Marina Ekhova, Vladimir Kolodey
Format: Article in Journal/Newspaper
Language:English
Russian
Published: Karelian Research Centre of the Russian Academy of Sciences 2015
Subjects:
масс-спектрометрия
индуктивно связанная плазма
лазерная абляция
качество химического анализа
Science
Q
Fennoscandian
Online Access:https://doi.org/10.17076/geo140
https://doaj.org/article/c06f750135064cca8ea952eb1b3a7caf
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Summary:The application of inductively coupled plasma mass spectrometry (ICP-MS) is discussed in the case study of Precambrian mafic and ultramafic rocks of eastern Fennoscandian shield and their mineral components. Determination of bulk probe sample composition is reported to be possible using both the chemical digestion of samples and in situ laser ablation (LA-ICP-MS). The accuracy of the analyses was monitored by analyzing the USGS standard BHVO-2, Russian standard SGD-1A, and in-house reference materials. The composition and measurement results of in-house reference materials С-1412, KN1 and KK1 are presented. The effect of ablation modes on the accuracy and reproducibility of LA-ICP-MS elemental concentration analysis was explored for standards, minerals and rocks. The sensitivity of the method is indicated to depend not only on the physicochemical properties of the samples (melting temperature, volatility), but also on the ablation mode and analysis procedure.

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